/**
 * @Author : SL
 * @Date : 2019/5/29
 * @Version :1.0
 * @Last Modified by : SL
 * @Last Modified time : 2019/5/29
 **/
const {add, mul} = require('./a')
const _=require('lodash')
const sum = add(10, 20)
const result = mul(10, 20)
console.log(sum)
console.log(result)
const arr=_.concat([1,2],3)
console.log('arr...',arr)